Low contrast on substrate
Ink/substrate combinations can wash out symbols. Fix with process control and validation.
GS1 2D Barcode Printing
GS1 2D Barcode Printing Guide
This guide focuses on what ranks and what works: GS1 QR Code vs GS1 DataMatrix, what data to encode, how to avoid scan failures, and how to validate print quality on real packaging.
Ready to select hardware? Use Sunrise 2027 barcode printer solutions after you confirm scope on the Sunrise 2027 barcode printing overview.
GS1 QR Code vs GS1 DataMatrix
Choose GS1 DataMatrix when
- Packaging space is limited and you need high data density.
- Industrial scanning workflows dominate.
Choose GS1 QR Code when
- You want strong smartphone compatibility.
- Consumer engagement options are part of the plan.
Best practice: decide based on space + scanning environment, then validate on-substrate with print and scan testing.
What data should you encode?
Start with GTIN. Add lot number, expiration date, or serial number only if you will capture and use those attributes downstream. Over-encoding increases complexity without improving results.
If you need help matching print performance to your packaging, see choose a printer for GS1 2D barcodes.
Why 2D barcodes fail to scan
Distortion at speed
What looks fine at slow speed may fail at production speed. Test at real line conditions.
Inconsistent printing across shifts
Repeatability is the goal. Use verification plus scanner testing to prevent drift.
FAQ
GS1 QR Code vs GS1 DataMatrix: which should I use?
Choose based on packaging space and scanning environment. Use GS1 DataMatrix when space is tight and you need high data density. Use GS1 QR Code when you want strong smartphone compatibility and consumer engagement options. Validate the choice on-substrate with print and scan testing.
What is the most common reason 2D barcodes fail to scan?
Poor print quality on the actual substrate—often caused by low contrast, dot gain, distortion, or inconsistent printing at speed. The fix is typically process control plus verification and scanner testing, not just changing the symbol.
How do I test GS1 2D barcode print quality?
Run trials on real packaging materials and line speeds. Use barcode verification for quality indicators and confirm scanning performance with representative scanners across shifts and conditions.